PDF malware analysis — malicious · 6405112b16dfef4a

MALICIOUS

PDF

1.4 KB

MD5: ad92a94f150a506ba8665280717e0884 SHA-1: 25fd362010750820a470e8a851b3295715948368 SHA-256: 6405112b16dfef4a5f36a7c0e4d3710a3b998e503bc2b1f50be9fb4d635c414c

268 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1059.007 JavaScript

This PDF file contains embedded JavaScript that exploits CVE-2009-4324 via the media.newPlayer function. The script is heavily obfuscated but ultimately attempts to execute arbitrary code. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 7

media.newPlayer — CVE-2009-4324 critical CVE exact CVE_2009_4324

PDF JavaScript calls media.newPlayer — CVE-2009-4324 is a use-after-free in Adobe Reader's multimedia plugin triggered by media.newPlayer(). Actively exploited as a zero-day in December 2009. (matched in decompressed stream)
PDF JavaScript exploit cluster critical PDF_JS_EXPLOIT_CLUSTER

PDF combines an executable JavaScript/action surface with exploit staging indicators such as eval/unescape/fromCharCode, XFA script content, or a related CVE pattern. Benign form JavaScript remains low-severity, but this correlated cluster is high-confidence malicious behavior.
ClamAV: Pdf.Exploit.Agent-21097 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-21097
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
JavaScript action low PDF_JAVASCRIPT

PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
Embedded JS stream low PDF_JS

PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj111111_000.js` `5d9e76ba619d010cf63d5cfb3ddba7b47ff022f88ca92e0906034216aa29a196`	pdf-javascript-stream	PDF /JS object 111111 at offset 0x160	1240 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
`javascript_obj111112_001.js` `4ed4626f7a52ffbcb0449984d4e851939efb1e2ff4f675c51e24a08882a64964`	pdf-javascript-stream	PDF /JS object 111112 at offset 0x482	241 bytes
`combined_document_js_000.js` `49e26ad787b2d851176d827405990d6faaac8e21f0746c44a2d99d25cac83c90`	deobfuscated-js	combined document JavaScript streams at offset 0x160	1482 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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